Measurement rotation acceleration sensor and measurement method

Abstract

The invention relates to a measurement rotation acceleration sensor and a measurement method. The measurement rotation acceleration sensor comprises a portable portion and a rotation portion, wherein the portable portion comprises an operation handle, a support, output windings, elbow sleeve pads, multiple stator core segments, permanent magnetic steels, bearings and an output signal wire interface, the output handle is fixedly connected with the support, the multiple stator core segments are spliced to form a fan-shaped ring structure, an inner arc of the fan-shaped ring structure is provided with four bearings, the permanent magnetic steels are arranged among the adjacent multiple stator core segments and the outer side of the out-most stator core, a winding groove of each stator core segment is internally provided with an output winding, outer arc faces of the stator cores and outer arc faces of the magnetic steels are fixedly connected with the support through the elbow sleeve pads, and the rotation portion is a detected rotation shaft and is taken as one part of an induction winding and a magnetic loop. Compared with a measurement rotation acceleration sensor in the prior art, the measurement rotation acceleration sensor has a simple structure, outputs electromotive force in one-to-one correspondence with the rotation acceleration and further has high precision.

Description

technical field [0001] The invention relates to a rotation acceleration sensor, in particular to a rotation acceleration measurement sensor and a measurement method. Background technique [0002] Transient rotation speed, that is, rotation acceleration, is one of the most common physical quantities in rotating mechanical systems. It causes torsional vibration of the rotating shaft, which causes vibration and noise in the mechanical system and affects the accuracy of machining. However, it is very difficult to accurately measure this physical quantity. Difficult, the known sensors include circular grating sensors and laser grating sensors. The signals measured by these two sensors are discrete and the accuracy is not high. In addition, there is a permanent magnet rotational acceleration sensor with a cup-shaped rotor structure connected coaxially. , the rotational acceleration signal measured by the sensor is a continuous variation, but because the connection method with the ...

AI Technical Summary

Problems solved by technology

[0002] Transient rotation speed, that is, rotation acceleration, is one of the most common physical quantities in rotating mechanical systems. It causes torsional vibration of the rotating shaft, which causes vibration and noise in the mechanical system and affects the accuracy of machining. However, it is very difficult to accurately measure this physical quantity. Difficult, the known sensors include circular grating sensors and laser grating sensors. The signals measured by these two sensors are discrete and the accuracy is not high. In addition, there is a permanent magnet rotational acceleration sensor with a cup-shaped rotor structure connected coaxially. , the rotational acceleration signal measured by the sensor is a continuous variation, but because the connection method with the measured shaft must be directly connected coaxially and concentrically, for permanent magnets that have been finalized and are in use and cannot be directly installed coaxially and concentrically In the case of a rotational acceleration sensor, especially when only a part of the middle part of the shaft is exposed without affecting the operation of the original system, the above sensor cannot be used to measure the rotational acceleration of the rotating shaft

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